摘要
辐射冷却被认为是解决电子设备过热问题的创新被动方法。然而,较低的净冷却功率限制了其应用。本文提出了一种基于辐射冷却和相变效应的复合材料实现对产热器件的热缓冲。以三聚氰胺泡沫(MF)为三维骨架,聚乙二醇(PEG)为相变材料,含氟聚合物(PVDF-HFP)为辐射冷却层,制备了具有优异抗泄露能力的辐射冷却相变材料(RC-PCMs)。复合材料不仅具有高太阳反射率(0.93)和高红外发射率(0.91),还具有高焓值(182 J/g)的特性。这项工作为新型被动辐射冷却技术提供了有益的参考。
Radiative cooling is considered an innovative passive approach to address the overheating issue in electronic devices.However,its application is limited by the lower net cooling power.This paper proposes a composite material based on radiative cooling and phase change effect to achieve thermal buffering for heat-generating devices.Using melamine foam(MF)as the three-dimensional framework,polyethylene glycol(PEG)as the phase change material,and fluorinated polymer(PVDF-HFP)as the radiative cooling layer,a radiative cooling phase change material(RC-PCMs)with excellent leak-proof capability is prepared.The composite material not only possesses high solar reflectance(0.93)and high infrared emissivity(0.91)but also has a high enthalpy value(182 J/g).This work provides valuable references for the development of novel passive radiative cooling technologies.
作者
翟化天
范德松
于坤洋
李志松
李强
ZHAI Huatian;FAN Desong;YU Kunyang;LI Zhisong;LI Qiang(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094 China;93126 Troops of the PLA,Beijing 100084,China;Shanghai Institute of Satellite Engineering,Shanghai 201109 China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2024年第2期520-524,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.52276069,No.51876091)。
关键词
辐射冷却相变材料
热缓冲
辐射特性
radiative cooling phase change material
heat generating
radiative characteristics
作者简介
翟化天(1995-),男,博士研究生,主要从事辐射热管理材料与器件研究;通信作者:李强,教授,liqiang@njust.edu.cn。
